The trouble is that spray rails were not invented in 1920, so in keeping with the original design I did not install them.
Hi Harry,
When I build a (semi) scale model of a fast boat, my prime concern is to make it run properly, so it is a nice toy to play with.
If I have to alter the design (slightly) to acheive that, I will do so.
As an example, my M.A.S. original has two engines, my model only one, as a single motor and larger prop is more effective than two smaller ones, and, as a testmodel reveilled that small props have issues on a stepped hull, the air/water mixture, drawn under the hull by the steps rendered small props partly useless to the point that the speed dropped, untill the steps had stopped working.
My 110 cm version with one prop suffers from the same issue, but the large single prop sits deep enough to work below that air watermix on the hull bottom and keeps the grip to propel the boat forward (at silly speed, I must admit, but great fun to run).
If the bow wave crawling up the sides bothers you, I'd go for the 'hidden' sprayrails you mentioned.
Regards, Jan.